Posted by alexandra_k on May 24, 2014, at 18:20:46
In reply to Re: fear, posted by alexandra_k on May 24, 2014, at 17:33:23
pretty sure i'm allowed this one, though. we just got this thing 'you aren't allowed one with CAS' and then like 'xxx' and 'xxx' models (which were graphics ones, not even CAS ones). pretty sure we are allowed natural display whatever that is called...
i probably shouldn't have spent most of yesterday watching calculator reviews on youtube :( but it really is as i expected... once you go a way... you get to be locked in. kinda like cellphones... you get used to a layout, certain quirks of functionality, and everything else just seems just odd...
NZ is mostly casio. but I like TI... i sort of think there is something a bit dodgey about cornering the school market... online GED... but the standardisation means there are lots of youtube vids on how to use. and it is fairly curriculum focused with respect to not cr*pp*ng up the display with things that aren't needed. it seems... simple... which is important. the display... with the contrast colors... seems organized. like... it is trying to help me cognitively. genuinely. instead of trying to make things hard because it wants to feel better about its own lack of understanding / or whatever it is that drives that...
i know why. it is because i'm learning maths via that online website and it is american. so... i'm learning american maths. i mean, it says i'm doing the nz version but all that means is i got nz dollars for the currency stuff and (perhaps) it cr*ps on a little less assuming that things like inches and feet are intuitive to me (they are not). but... i'll be learning american... and this calculator... makes intuitive sense / organization of what i've been learning, yeah.
watching the how to use clips helped things make more sense to me, anyway. starting to have more of an overview of were things are headed... with the function tables. the TI 30 is just perfect for me for where I am now. Once I get to integration / differentiation I need a graphics calculator anyway. So... I don't think the... whatever the standard entry graphics one... I don't think that does natural display for equations. I guess it is something you outgrow. What becomes important is expressions / function tables / graph equivalencies.
For now... I'm just trying to get a hang of moving parts... E.g., I was getting upset because a question from last year was to name an intrinsic property (one that doesn't depend on the amount of matter present). one example was 'density'. And I was upset because I've just learned that density is equal to amount of matter (g) over or into area (v). so i thought that density did indeed depend on amount of matter. that half of the freaking concept (well, maybe i wasn't thinking half exactly but, uh...)
But then... The point is that we wiggle the volume in order to vary the concentration while the amount in moles remains fixed.
and i'm confused already... density... concentration... ha... hahaha.
not getting the right answer because hitting EXPx102 isn't the right way to enter that in really isn't helping me.
poster:alexandra_k
thread:1058481
URL: http://www.dr-bob.org/babble/social/20140502/msgs/1066063.html